safety board, meanwhile, says the battery pulled from a dream liner showed signs of thermal damage. ntsb's michael boyd tells us he's never seen an investigation like this. where the faa says a plane is safe and then grounds it. he says the faa has egg all over its face. >>> it's been 538 days since the country lost its top credit rating. what are we doing to get it back? the imf says the economy will grow by 2% this year but, you know what, that's not really very good, and the u.s. needs to work on entitlement reform. >>> our next story "outfront. "women on the front line. a ground-breaking decision from the pentagon. cnn has learned that defense secretary leon panetta will announce a lift on the ban against women serving in combat positions. this is pretty incredible. this move, to give you a sense of the significance, could open up 230,000 frontline jobs to women in the military. "outfront" tonight, rosa brooks, a columnist for foreign policy and has worked in the pentagon under the obama administration and david frum, former speech writer for george w. bush and a contributor for us.